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Finding the Fourth Proportional to 486,920.90, 730,600.05 and 220,544.30

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Solution

The fourth proportional to 486,920.90, 730,600.05 and 220,544.30 is: 330,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,920.90 : 730,600.05 = 220,544.30 : x
  2. Step 2: Convert to fraction form
    486,920.90/730,600.05 = 220,544.30/x
  3. Step 3: Cross multiply
    486,920.90x = 730,600.05 × 220,544.30
  4. Step 4: Simplify right side
    486,920.90x = 161,129,676,607.22
  5. Step 5: Solve for x
    x = 161,129,676,607.22/486,920.90
  6. Step 6: Final answer
    x = 330,915.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.